Flora of North America species comparison

0–15 mm.

0–20 mm.

(25–)50–120 × 1–4 mm;

blade linear, margins entire, rarely toothed, veins conspicuous or not, surfaces villous.

20–120 × 4–25 mm;

blade obovate or narrowly obovate, margins toothed, veins conspicuous, surfaces pilose or glabrate.

(10–)40–240(–260) mm, hairy, hairs antrorse, long and short and patent, long.

30–240 mm, hairy, hairs patent, long.

grayish or brownish, 40–120 mm, densely flowered, flowers in whorls or pairs;

bracts triangular or narrowly ovate, 2–10 mm, length 1–2 times sepals, apex acute or acuminate.

greenish or yellowish, 38–260 mm, densely or loosely flowered;

bracts narrowly ovate or ovate, 1.6–2.5 mm, length 0.7–1 times sepals.

sepals 2.2–4.8 mm;

corolla bilaterally symmetric, lobes reflexed, 1.6–2.1 mm, base cordate;

stamens 4, connective usually elongated, apex acute.

sepals 1.5–2.4 mm, apex obtuse;

corolla radially symmetric, lobes erect, forming a beak, 1.1–2.9 mm, base obtuse;

stamens 4.

2, 2.2–2.6 mm.

2, brown or yellowish brown, 1.6–2 mm, adaxial face deeply concave.

= 20.

= 24.